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USB (universal serial bus) interface control method and mobile terminal

A universal serial bus, USB interface technology, applied in the field of communication, can solve the problems of false detection of OTG equipment, easy damage of identification detection feet, etc.

Active Publication Date: 2017-06-13
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for controlling a USB interface of a universal serial bus and a mobile terminal, which solves the problem that the identification and detection pin of the USB interface is easily damaged due to a long-term high level state, and even causes false detection of OTG equipment

Method used

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  • USB (universal serial bus) interface control method and mobile terminal
  • USB (universal serial bus) interface control method and mobile terminal
  • USB (universal serial bus) interface control method and mobile terminal

Examples

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no. 1 example

[0023] Such as figure 1 As shown, the embodiment of the present invention provides a universal serial bus USB interface control method, which is applied to a mobile terminal. The mobile terminal includes a housing of the USB interface and a touch panel, and one of the signals of the touch panel The receiving end is connected to the shell of the USB interface; when the USB interface is not connected to an external device, the identification detection pin of the USB interface is in a low level state, and the method includes:

[0024] Step 101, acquiring the capacitance value detected by the signal receiving end of the housing of the USB interface relative to the grounding end.

[0025] In this embodiment, one of the signal receiving ends of the touch panel of the mobile terminal is connected to the housing of the USB interface, and the signal receiving end connected to the housing of the USB interface is preset to detect the housing of the USB interface. Relative to the capacit...

no. 2 example

[0032] Such as figure 2 As shown, the embodiment of the present invention provides a universal serial bus USB interface control method, which is applied to a mobile terminal. The mobile terminal includes a housing of the USB interface and a touch panel, and one of the signals of the touch panel The receiving end is connected to the shell of the USB interface; when the USB interface is not connected to an external device, the identification detection pin of the USB interface is in a low level state, and the method includes:

[0033] Step 201, acquiring the capacitance value detected by the signal receiving end of the housing of the USB interface relative to the grounding end.

[0034] In this embodiment, one of the signal receiving ends of the touch panel of the mobile terminal is connected to the housing of the USB interface, and the signal receiving end connected to the housing of the USB interface is preset to detect the housing of the USB interface. Relative to the capaci...

no. 3 example

[0058] The first embodiment and the second embodiment above have introduced different implementation modes of the control method of the USB interface in detail respectively, and the following will combine image 3 and Figure 4 The corresponding mobile terminal is further introduced.

[0059] Specifically, the mobile terminal 300 of the embodiment of the present invention includes a casing of a USB interface and a touch panel, and one of the signal receiving terminals of the touch panel is connected to the casing of the USB interface; the USB interface is not connected When an external device is connected, the identification detection pin of the USB interface is in a low level state, and the mobile terminal 300 further includes: an acquisition module 310 , a judgment module 320 and a first control module 330 .

[0060] The obtaining module 310 is configured to obtain the capacitance value of the housing of the USB interface relative to the ground terminal detected by the sign...

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Abstract

The invention discloses a USB (universal serial bus) interface control method and a mobile terminal. The mobile terminal comprises a shell of a USB interface and a touch panel, and one signal receiving end of the touch panel is connected with the shell of the USB interface. When the USB interface is not connected to an external device, an identification detection pin of the USB interface is in a low level state. The method includes: acquiring capacitance of the shell of the USB interface relative to the grounding end, detected by the signal receiving end; determining that the external device is inserted into the USB interface when the capacitance is within a first preset threshold range; when the external device is connected into the USB interface, switching the low level state of the identification detection pin of the USB interface to a high level state. The error that an OTG (on-the-go) device is detected to be inserted in due to the fact that the identification detection pin is short circuited to a ground due to corrosion when in a high level state for a long time is avoided. Through the use of the scheme, operation by users is simplified, and user experience is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for controlling a USB interface of a universal serial bus and a mobile terminal. Background technique [0002] When the Universal Serial Bus (USB) interface of the mobile terminal detects OTG (On-The-Go) devices, according to the USB interface protocol, if the OTG function needs to be supported, the identification (ID) detection pin inside the USB interface needs to be set by default to It is high level (that is, the default voltage is always 1.8V). Since the ID detection pin of the USB interface is always at a high level, after moisture or foreign matter enters the USB interface, the ID detection pin of the USB interface will be corroded, resulting in a micro-short circuit to the ground. After the ID detection pin is short-circuited to the ground, the voltage is low. At this time, when the mobile terminal is not connected to the OTG device, it will mistakenly det...

Claims

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Application Information

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IPC IPC(8): G06F13/40
CPCG06F13/4081
Inventor 蒋复岱朱娜涛
Owner VIVO MOBILE COMM CO LTD
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